不为零

• A new type of pressure coefficient cp is defined to lead to a linear correlation with radial locations , which will lead to a curve correlation with radial locations with conventional definition of cp . the correlations of cm , nuave and cp with rotational reynolds number have been got through the computation with rotational reynolds number from zero to 1 . 0 108
  给出了扭矩系数cm 、平均换热系数nu _ ( ave )随旋转雷诺数变化的关系式，发现它们与没有预旋时是完全不同的，当re _ = 0时， cm 、 nu _ ( ave )不为零，而具有一个初值。
• The radar which is embedded on platform sidelooking , but the platform will be disturbed by airflow inevitably . so , the radar will have a small sloping angle , thereby , the doppler centroid that is not zero and doppler frequency rate need to be estimated from the raw echo data in order to focus in azimuth commendably
  场景成像的合成孔径雷达一般是正侧视放置,但是载机不可避免的要受到各种扰动影响,雷达会有一定的斜视角,从而导致了多普勒中心频率不为零,多普勒调频斜率也随着雷达斜视角改变。
• If the correlation of different spread spectrum codes is not zero , there would be multi - access interference . additionally , cdma communication system is a interference - limited system , that is to say that the interference directly influences the capacity of this system and the qos of the user in the system . in order to rid the multi - access interference , multi - user detection ( mud ) plays a important role
  若用户间的互相关不为零，则会导致多址干扰的产生；另一方面，由于cdma系统是干扰受限的系统，即干扰程度直接影响到系统软容量和系统内用户服务质量的高低，为了有效地克服多址干扰的影响，多用户检测( mud : multi - userdetection )技术的使用就显得尤其重要。
• The precious method to simulate earthquake accelerations is not perfect because the points on the interface still move according to the simulated acceleration when the points " motion ends , which is obviously a paradox . if the points " velocity is not zeroized , soil ' s damage value based on shear stress ' s peaks or extrema is overestimated in multi - point input analysis . the new method ' s rationality is analyzed
  以往人工合成的地震波在地震结束时即地震加速度恒为零时速度不为零，这与合成地震动是“模拟输入点从静止到运动再到静止的运动过程”这一要求不一致，同时导致时域内多点输入分析时差动力过大以至算出的损伤值过大，于是本文提出了简易的地震动速度归零化方法并分析了其合理性。
• Abstract : when the accelerating time of frequency is equal to zero , this paper discusses the gain of inventer - induction motor under the vector controlled and non - vect or c ontrolled . at the same time , this paper discusses it while the time of slope is no t zero . the m othod of the slippery and difference is introduced in this papaer for designing the system contained inv - m
  文摘:讨论了频率加速时间为零时，矢量控制和非矢量控制两种情况的通用变频器异步电动机的传递函数，同时也讨论了斜坡给定时间不为零的通用变频器异步电动机传递函数，介绍了滑差限定的方法，为设计含有inv - m的系统提高提供了理论依据
• Secondly , using the relation between the weighted modified k - functional , the weighted modulus of smoothness , the weighted main - part modulus of smoothness . we get the pointwise direct and inverse approximation theorem with jacobi weight for s ' zdsz - kantorovich operator . thus some results on w ( x ) = 0 ( w ( x ) denotes the weight function ) , ditzian - totik modulus and classic modulus are extend
  其次，引入一种改变的带权k -泛函，利用带权光滑模和带权主部光滑的关系及带权光滑模与改变带权k -泛函的等价性，关于sz sz - kantorovich算子，讨论了一阶矩不为零的算子的点态带jacobi权逼近正定理及等价定理，推广了已有的权为零及ditzian - totik光滑模和古典光滑模的结果。
• If the correlation of fferent spread spectruin codes is not zero , ther would be multi - access interference . additionally , cdma conunwhcation system is a intefference - limited system , tha is to say that the interference directly influences the capabi1ity of dris system and the qos of the user in the system . in order to rid the nearfar problem and muti - access intehae , power control plays an impohan role
  若用户间的互相关不为零，则会导致多址干扰的产生；另一方面，由于cdma系统是干扰受限的系统，即干扰程度直接影响到系统软容量和系统内用户服务质量的高低，为了有效地克服远近效应和多址干扰的影响，采用一定的功率控制技术则显得尤其重要。